In order to maximize the likelihood that experimental and control groups are similar before any treatment is begun,researchers typically use:
A) naturalistic observation
B) random assignment
C) sampling
D) participant observation

Question

Quizplus · Accepted Answer

Random assignment is the most effective way to ensure that participants in the experimental and control groups are similar before any treatment is given. This is because random assignment eliminates any potential biases that may exist in the selection process and ensures that the groups are formed purely by chance. Naturalistic observation, sampling, and participant observation do not necessarily control for all extraneous variables that could influence the results.

In Order to Maximize the Likelihood That Experimental and Control